| 摘要 |
<p>An apparatus has a channel (5) for a fluid and a member (8) adapted to accomplish a first throughflow area in a first position in the channel and a second throughflow area in a second position in the channel. The member (8) is adjustable for accomplishing a third throughflow area, which is different from the first throughflow area, when the member is in the first position. Alternatively, the apparatus consists of a set of parts comprising three interchangeable members, for achieving different throughflow areas in the channel. A milking equipment (20) has a pulsator (27) adapted to communicate with the pulsation space in each teatcup via an apparatus (D) of the above described kind.</p> |
